Scaffold-support.



No. 713,308. Patented Nov. Il, |902.

E. JLLIFFE.

SCAFFOLD SUPPORT.

(Application med Feb. 15. 1902,) (No Model.)

www m' w@ .064% l? f.

UNITED STATES EDVARD JOLLIFFE, OF CHICAGO, ILLINOIS, ASSIGNOR TO SAFETYSTAGE SUPPORT COMPANY, OF NOIS.

CHICAGO, ILLINOIS, A CORPORATION OF ILLI- SCAFFOLD-SUPPORT.

SPECIFICATION forming part of Letters Patent No. 713,308, dated November11, 1902. Application led February 15, 1902. Serial No. 94,240. (Nomodel.)

To tti/Z whom, it muy concern:

Be it known that I, EDWARD JOLLIEEE, a citizen of the United States, anda resident of Chicago, in the county of Cook and State of Illinois, haveinvented an Improved Scaffold- Support, of which the following is aspecification.

This invention relates to scaffold-supports, and relates particularly toscaffold-supports designed and adapted for use by painters and others inpainting or doing other work on the sides of buildings and the like.

The object of the invention is to provide a scaffold-support designedfor use on gable roofs, which is extensible, so that it may be adjustedto roofs of dierent width and which will embody the features ofstrength, safety, ease of manipulation, simplicity of construction, andcheapness.

A scaHold-support of my invention consists of the various features,combinations of features, and details of construction hereinafterdescribed and claimed.

In the accompanying drawings a scaffoldsupport of my invention is fullyillustrated.

Figure 1 is a perspective View of a house with scaffold-supports of myinvention adjusted thereto and a scaffold supported thereon. Fig. 2 is atop View of a scaffold-support of my invention. Fig. 8 is a side or edgeview thereof, and Figs. A and 5 are enlarged perspective views ofopposite ends thereof.

A scaold-support of my invention consists of two bars 1 and 2, connectedto each other by suitable guides, in which they are freely movablelongitudinally. As shown, the guides for said bars consist of metalplates orloops 3 and 4, secured to the overlapping ends of said bars.The bars 1 and 2 are preferably made of oak or other strong wood, butmay be made of any desired and suitable material. Secured to the outerend of the bar 1 is a hook 5, adapted to catch over the ridge 6 of aroof or other support. A scaEold-hook 7 is adapted to be secured to theouter end of the bar 2 by any suitable means. In the preferableconstruction shown a plate 8 is secured to the end of said bar 2,provided with an upwardly-extending Iiange or ledge 9, the ends of whichare curved away from the end of said bar. The plate S is provided withlateral extensions 10, which will operate to prevent turning of said bar2. Preferably,

also, said plate 8 is provided with brads 11 on its under side, whichwill stick into the roof and prevent said bar from sliding. Formed inthe edges of the bars 1 and 2 at desired intervals are notches 12 and13, each having a straight and an inclined side. Pivoted upon the bars 1and 2 are hooks 14 and 15, adapted to engage the notches in the barother than that to which it is pivoted. The relation of the hook 14,pivoted to the bar l, and of the notches 13 in the bar 2 is such thatengagement of the hook 14 with one of the notches 13 will lock the bars1 and 2 against outward movement, the inclined sides of said notchesallowing said bars to be moved inwardly to shorten the scaffold-support.The relation of the hook 15 to the notches 12, on the other hand, issuch that engagement of said hook with one of said notches will locksaid bars against inward movement, the inclined sides of said notchesallowing outward movement of said bars to lengthen saidscaffold-support.

The bars 1 and 2 may be made of any desired size which will affordadequate strength. When made of strong wood, a desirable size is one (l)inch in thickness by two (2) inches in width. The length of said barsalso may be varied as desired to meet requirements. I find in practicethat bars ten (10) feet in length are long enough for all ordinarypurposes.

The notches 12 and 13 may be any desired distances apart. In practice Ihave found that desirable distances are one (l) foot between the notches12 and six (6) inches between the notches 13.

The notches 12 in the bar 1 and the hook 15, adapted to engage the same,are merely for convenience in placing the hook 5 over the ridge 6 of theroof, which is`commonly done from a ladder placed against the side ofthe building. After effecting engagement of said hook with the ridge ofthe roof the hook 14: is swung pivotally to clear the notches 13 in thebar 2. Said bar 2 is then moved in or out until the end thereof is indesired position relatively to the eaves of the roof and said hookrengaged with a notch 13. The scaf- IOO fold-hook 7 is then engaged withthe flange or ledge 9 on said bar 2, there being a scaffold-support foreach scaold-hook.

It is obvious that the pressure of the scat"- fold-hooks on thescaffold-supports will hold the same in `strong frictional engagementwith the roof, which will relieve the strain on the parts thereof, whichmay therefore be made much lighter than though subjected to the fullweight of the scaffold and of the load thereon.

I claim* 1. A scaold-support consisting of two bars, guides in whichsaid bars are longitudinally movable, means to secure said bars againstrelative longitudinal movement, in either direction, means to attach oneof said bars to the ridge of a roof or other support and means to securea scaold or the like to the other of said bars, substantially asdescribed.

2. A scaffold-support consisting of two bars, guides on each of saidbars in which the other is longitudinally movable, means to secure saidbars against relative longitudinal movement, in either direction, meanstorattach one of said bars to the ridge of a roof or other support andmeans to secure a scaiold or the like to the other of said bars,substantially as described.

3. Ascaold-support consisting of two bars, guides on each of said barsin which the other islongitudinallymovable,notch esin said bars, hookspivoted to said bars adapted to engage the notches in the otherof saidbars, whereby said bars may be secured against relative movementineither direction, means to attach one of said bars to the ridge of aroof or other support and means to secure a scaffold or the like to theother of said bars, substantially as described.

4. Ascattold-support consisting of two bars, guides on each of said barsin which the otherl is longitudinally movable,notches in said bars eachhaving an inclined side, hooks pivoted to said bars adapted to engagethe notchesin the other of said bars, whereby said bars may be securedagainst relative movement in either direction, means to attach one ofsaid bars to the ridge of a roof or othersupport and means to secure ascaffold or the like to the other of said bars, substantiallyasdescribed.

5. Ascalold-support consisting of two bars, guides on the overlappingends of each of said bars in which the other is longitudinally movable,notches in said bars each having an inclined side, hooks pivoted to theoverlapping ends ofsaid bars adapted to engage the notches in the otherot' said bars, means to attach one of said bars to the ridge of a roofand means to secure a scaiold or the like to the other of said bars,substantially as described.

6. Ascaffold-supportconsistingoftwo bars, guides on each of said bars inwhich the other islongitudinallymovable,notchesin said bars, hookspivoted to said bars adapted to engage the notches in the other bar, ahook on the outer end of one of said bars and a ledge or shoulder at theouter end of the other of said bars, substantially as described.

7. A scaEold-support consisting of two bars, guides on each of said barsin which the other islongitudinally movable,notchesin said bars, hookspivoted to said bars adapted to engage the notches in the other bar, ahook on the outer end of one of said bars, a ledge or shoulder at theouter end of the other of said bars and brads in the under side of saidbar provided with the ledge, substantially as described.

In testimony that I claim the foregoing as my invention I affix mysignature, in presence ot' two subscribing witnesses, this lOth day ofFebruary, A. I). 1902.

EDWARD JOLLIFFE.

Witnesses:

M. S. SoMERvILLE, ARTHUR W. UNDERwooD.

